[LTP] [PATCH 1/1] lsmod01.sh: Whitelist zcrypt

[Cyril Hrubis]

Hi!
> zcrypt (s390x specific module) has different refcnt:
> 
>     lsmod01 1 TINFO: lsmod output different from /proc/modules
>     118c118
>     < zcrypt 131072 9
>     ---
>     > zcrypt 131072 8
> 
> This is probably due libcrypto update to support hardware acceleration
> of some algorithm that kmod is using, which causes increasing refcnt.
> 
> Because it's would not be easy to get a generic mechanism to detect
> affected modules (ATM probably only zcrypt), whitelist parsing it.
> 
> Fixes: https://bugzilla.suse.com/show_bug.cgi?id=1237399

I read the bug, I guess that there isn't anything better than doing
this.

> Suggested-by: Takashi Iwai <tiwai@suse.de>
> Signed-off-by: Petr Vorel <pvorel@suse.cz>
> ---
>  testcases/commands/lsmod/lsmod01.sh | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/testcases/commands/lsmod/lsmod01.sh b/testcases/commands/lsmod/lsmod01.sh
> index 8b7a0a7943..1fe399aa06 100755
> --- a/testcases/commands/lsmod/lsmod01.sh
> +++ b/testcases/commands/lsmod/lsmod01.sh
> @@ -14,6 +14,9 @@ TST_NEEDS_CMDS="lsmod"
>  
>  module_inserted=
>  
> +# zcrypt has higher refcnt

Maybe a bit better description:

# lsmod triggers zcrypt refcount increase if it links against libssl
# which uses hardware acceleration

Other than that:

Reviewed-by: Cyril Hrubis <chrubis@suse.cz>

> +whitelist_modules='zcrypt'
> +
>  setup()
>  {
>  	if [ -z "$(cat /proc/modules)"  ]; then
> @@ -55,8 +58,8 @@ lsmod_matches_proc_modules()
>  	if [ "$lsmod_output" != "$modules_output" ]; then
>  		tst_res TINFO "lsmod output different from /proc/modules"
>  
> -		echo "$lsmod_output" > temp1
> -		echo "$modules_output" > temp2
> +		echo "$lsmod_output" | grep -v "^$whitelist_modules" > temp1
> +		echo "$modules_output" | grep -v "^$whitelist_modules" > temp2
>  		if tst_cmd_available diff; then
>  			diff temp1 temp2
>  		else

-- 
Cyril Hrubis
chrubis@suse.cz